The Declaration of Independence, written by Thomas Jefferson and adopted after amendment by the Second Continental Congress on July 4, 1776.Articles of Confederation: The Articles of Confederation
These articles establishing a confederation of the states (formerly colonies) were adopted by the Second Continental Congress on June 21, 1781.
In this letter the Commander in Chief of the revolutionary army describes the critical battle of Trenton.
Battle of Princeton: Letter of January 5,1777 from George Washington to the Congress.
In this letter Washington describes the period after Trenton and the taking of Princeton.
This is the final peace treaty between England and the United States, signed at the same time as the peace treaty between England and France. The source is the Avalon collection, which has the successive versions and documents at the Avalon Paris Peace Treaty with notes by Hunter Miller.
The Internet Modern History Sourcebook list many documents available online for the Colonial and Revolutionary periods in American history and in the Revolutionary period in France. The is a thorough listing.